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V-Lab

iShares Bitcoin Trust ETF GJR-GARCH Volatility Analysis

Volatility prediction for Monday, September 14th, 2026

1 Day

41.54%

decreased by 1.47%

1 Week

42.54%

decreased by 0.47%

1 Month

45.38%

increased by 2.37%

Analysis last updated: Friday, September 11, 2026 at 10:42 PM UTC

Date Range:

from

to

6M ·

1Y ·

2Y ·

All

graph of iShares Bitcoin Trust ETF GJR-GARCH

News Impact Curve

How returns affect tomorrow's volatility

Volatility Forecast

How volatility evolves over time

Parameter Estimates

Jan 15, 2024 to Sep 11, 2026

Model Insight

Volatility shocks decay with a half-life of 14 trading days, meaning a shock loses half its impact after approximately 14 days.

σ

GJR-GARCH Model

Tap to view equation

Shock decay: Shocks decay with a 14-day half-life
ParamValuet-stat
ωconst0.4949
1.39
αARCH0.0570
0.83
βGARCH0.8650
15.30***
γleverage0.0625
0.34

0.953

Persistence

14d

Half-life
σ

GJR-GARCH Model

Tap to view equation

ParameterValuet-statistic
ω

const

Unconditional variance weight

0.4949
1.39
α

ARCH

Response to squared shocks

0.0570
0.83
β

GARCH

Volatility persistence

0.8650
15.30***
γ

leverage

Additional response to negative shocks

0.0625
0.34

Persistence:

0.953

Half-life:

14 days